// Copyright (c) Matthias Koch
//
// See the NOTICE file distributed with this work for additional information
// regarding copyright ownership.  rubicon licenses this file to you under 
// the Apache License, Version 2.0 (the "License"); you may not use this 
// file except in compliance with the License.  You may obtain a copy of the 
// License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software 
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the 
// License for the specific language governing permissions and limitations
// under the License.
// 
using System;
using System.Text.RegularExpressions;

using XValidation.Exceptions;

namespace XValidation.Validations
{
  public class EmailValidation : RegexValidation
  {
    private const string EmailPattern = @"^(([^<>()[\]\\.,;:\s@\""]+(\.[^<>()[\]\\.,;:\s@\""]+)*)|(\"".+\""))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-z\-0-9]+\.)+[a-z]{2,}))$";

    public EmailValidation ()
        : base (EmailPattern, RegexOptions.IgnoreCase)
    {
    }

    public override void Validate (object value, string paramName, IValidationContext context)
    {
      try
      {
        base.Validate (value, paramName, context);
      }
      catch (ValidationException)
      {
        throw new EmailValidationException (paramName);
      }
    }
  }
}